Embroidering-machine.



No. 735,559. v TATENTED AUG. 4, 1903. F. MUELLER.

EMBROIDERING MACHINE.

v APPLICATION FILED JAN/13V. 1903.

N0 MODEL.

6 SHEETS-SHEET 1.

HIIIIIIIIIWIII $513440 0920: K 140044 507; I M 55 55W 'No.735,559.PATBN-TBD AUG. 4, 1903.

F. MUELLER. EMBROIDERING MACHINE. APPLICATION FILED JAN. 13. 1903. y noMODEL. a SHEETS-SHEET 2.

wi/me'ooeoz W THE Ncfims PETERS co, PHOTO-LITNO.. WASHINGTON, o. c.

I PA-TENTED. AUG. 4 1903.

v I. MUELLER. EMBROIDERING MACHINE.

APPLICATION FILED JAN. 13. 1903.

5 SHEETS-SHEET a.

N0 MODEL.

PATENTED AUG. 4, 1903.

5 P, MUELLER. EMBROIDERING MACHINE.

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APPLICATION FILED JAN. 13, 1903.

N0 MODEL.

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No. 735,559. PA TENTED AUG. 4, 1903 I F. MUELLER. 'EMBROIDERING MACHINE.APPLICATION FILED JAN. 1a. 1903.

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Jay 14 UNITED STATES Patented August 4;,

PATENT OFFICE.

FRIEDERIOK MUELLER, OF NEWARK, NEW JERSEY, ASSIGNOR TO THE SINGERMANUFACTURING COMPANY, A CORPORATION OF NEW JERSEY.

,EMBROIDERING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 735,559; dated August4, 1903. Application filed Ja r' a190s. Serial lie-138.875. (N model.)

To aZZ whom it may concern.-

Be it known that I, FRIEDERICK MUELLER, a citizen of the United States,residing at Newark, in the county of Essex and State of New Jersey, haveinvented certain new and useful Improvements in Embroidering Machines,of which the following is a specification,refe1-- ence being had thereinto'tlie accompanying drawings.

This invention ,relates to a machine for fancy stitching andembroidering, andhas for its object to provide a machine ofcomparatively simple construction by which a large variety of ornamentalor embroidering seams may be produced merely by simple adjustments andwithout change of parts and which admits of a great increase in thenumber of ornamental or embroidering seams by the use of interchangeablecams.

The improved machine in its preferred form comprises a needle-barprovided with two needles mounted to reciprocate vertically in ahorizontally swinging needle bar frame or gate to which is imparted astep-by-step movement across the line of the feed of the work forseveral successive stitches in each direction alternately, andcooperating with the two needles and their loop-taking device or devicesis a horizontally-swinging thread-carrier which interweaves anembroideringthread back and forth into the ornamental seam and crosswiseof the stitches formed by the needles and loop-taker. The step-by-stephorizontal movements of the needle-bar and needles are produced andcontrolled by an intermittingly-rotating cam connected with the swingingneedle-bar frame or gate and operated from a continuously-rotatingcamwheel geared to the main shaft of the machine and actuating an arm orlever connected by a pitman to a clutch device which imparts the propermovements to the said intermittingly-rotating cam. Thehorizontally-swinging embroidering-threadcarrier is preferably actuatedfrom a peripheral cam-groove in the said continuously-rotatingcam-wheel.

In the accompanying drawings, Figure 1 is a front side view of theimproved machine with the work-plate in section. Fig. 2 is a plan viewof the same with part of 'thearm broken out. Fig. 3 is a front end viewof the machine with theface-plate removed. Fig. 4 is a detail view,partly in horizontal section, to show the mechanism for operating theembroidering-thread carrier. Figs. 5 and 6 are detailed views ofdifferent forms of intermittingly-rotating cams for moving the needlebarframe or gate laterally. Fig. 7 is an edge view of thecontinuously-rotating cam-wheel, showing the cam-groove from which thethread-carrier is operated. Figs. 8, 9, 10, and 11 illustrate differentformsof seams made by the machine.

Referring to the drawings, 12 denotes the bracket-arm, and 13 thework-plate, of the machine. Mounted in the upper part of the arm 12 isthe main shaft 14, provided at its forward end with a crank 15,connected by a pitman 16 with the needle-bar 17, carrying the needles l8and reciprocating vertically in a horizontally-swinging frame or gate19, pivoted vertically on center screws 20. The shaft 14 is providedwith a bevel-gear 21, meshing with a larger bevel-gear 22, rotating athalf the speed of the driving bevel-gear 21, fixed to said shaft.Rig-idly connected to or integral with the gear 22 is a cam-wheel 23,having in its front face a cam-groove 24, entered by a pin orroller-stud 25 on a swinging arm or lever 26, fulcrumed at 27 by arocking shaft or stud suitably journaled in the bracket-arm 12.

The shaft 14 carries a second bevel-gear 2S, meshing with a similarbevel-gear 29 at the upper end of a vertical shaft 30, having at itslower end a crank 31, connected by a pitman 32 to a rocker, from whichis operated the oscillating shuttle 33, cooperating with the two needles18. The mechanism thus far described, as also the feeding mechanismoperated from the vertical shaft 30, has long been in use and isfamiliar to those skilled in the art.

Suitably supported from the bracket-arm 12 is'a cam-wheel 34, to whichan intermittingly-rotating movement is imparted from the'swinging arm orlever 26 through a pit- :man 35, connected at its rear end in awellknown manner to a slide adjustable in a groove in the arm or lever26, said pitman being jointed at its forward end to the arm 36 of athree-armed rocker movable independently of the said cam-wheel 34 andhaving arms 37, connected by springs 38 with clutchdogs 39, adapted tobite on the flange of the said cam-wheel when the said rocker is movingin one direction, but being released from holding engagement with saidflange when the said rocker is moving in the opposite direction, saidrocker and clutch-dogs thus imparting an intermittent rotating movementto said cam-wheel. The speed of rotation of the cam-wheel 34 may bevaried by adjusting the point of connection of the rear end of thepitman with the swinging arm or lever 26, or the rotation of the saidcam-wheel may be arrested altogether (for sewing straight seam s) bybringing the connection ofthe said pit-man to a point coincident withthe fulcrum of the arm or lever 26, as will be understood.

l. e cam-wheel 34 is provided in its rear face with a cam-groove 40,entered by a pin or roller-stud 41 on a sliding bar 42, jointed at itsforward end to an arm or projection 43 on the swinging needle-bar frameor gate 10, and thus as the said cam-wheel is slowly rotated astep-by-step swinging horizontal movement across the line of the feed ofthe work will be imparted to the said frame or gate and to theneedle-bar and needles carried thereby, so as to produce a-series ofstitches successively displaced from the line of the feed of the work inone direction and then a similar series of stitches in the oppositedirection to produce scallops or serpentine seams, the figures of whichwill be varied according to the speed of rotation of the cam-wheel 34 oraccording to the particular form of the camgroove in said wheel, thefigures of the seam being still further varied, if desired, in eithercase by varying the usual work-feed. The continuously-rotating cam-wheel 23 is provided with a peripheral cam-groove 44, entered by a pinor roller-stud 45 on one arm of a bell-crank 46, having a pivotal shankor shaft 47 journaled in the bracket 48, said bellcrank being connectedby a pitman 49 to an arm 50 on a rocking sleeve 51, mounted on thepresser-bar 52 and having a second arm 53, to which is attached anembroidering-thread carrier 54. The said tln-ead-carrier 54 has at itslower end an inwardly-turned finger which swings closely adjacent to andjust in front of the needles 18, said finger having an eye or eyesthrough which an embroiderin g-thread passes in such a manner that asthe said finger swings to and fro the embroideringthread is disposedback and forth across the line of the double seam and is interwoven withand stitched down on the upper side of the work by the needlethreads,the said thread-carrier pausing at each end of its throw in eitherdirection while the work is being fed, with the extreme end of itsthreadfinger slightly behind the needles, so that as the needles descendone needle or the other will come down in front of and thus lay itsthread over the last lap of embroideringthread disposed across thedouble seam by the said finger.

The embroidering thread or silk preferably runs from the spool 55through a thread-guide 56, and thence through the thread-eye of apull-off device 57, attached to the swinging arm or lever 26, thencethrough an intermittent tension device 58 to a constant check tensiondevice 59, and thence to the swinging embroidering-thread carrier, bywhich it is guided to the work. The main shaft 141s provided with a cam60, which engages the inner end of the spring-pressed stem of theintermittent tension device, so as to force the sprin g-pressedtension-disk outward,and thus relieve the stress of the main orintermittent tension on the embroidering-thread at the moment when thesaid embroidering-thread is being laid across in front of the needles,the main tension on the embroidering-thread being restored before thethread-carrier quite reaches the end of its stroke in eitherdirection,and thus the embroidering-thread is drawn taut into the stitches formedby the needles.

From the foregoing it will be understood that a great variety ofornamental figures may be made by the improved machine. Thus with theintermittiugly-rotating cam-wheel 34, provided with a heart-shapedcam-groove, as shown in Fig. 5, wavy or sinuous seams, such as are shownin Fig. 8, will be produced, the number of right-and-left stitches ineach figure, or the size of the figures, being determined by the speedof rotation of the said camwheel, depending on the position of ad justment of the connection of the pitman 35 with the swinging arm orlever 26. The greater the speed of rotation of said cam-wheel thesmaller the figures of the wavy or sinuous seams. lVith a cam-groove inthe wheel 34 shaped as shown in Fig. 6 scalloped embroidering-seams, asshown in Fig. 9, will be produced, the scallops being smaller or larger,accordingly as the cam-wheel rotates faster or slower. If the point ofconnection of the pitman 35 be lowered, so as to be coincident with thefulcrum or center of movement of the swinging arm or lever 26, thecam-wheel 34 will remain stationary and a straight embroidery-seam, asshown in Fig. 10, will be produced, while if the embroidering-thread beomitted from the tln'ead-carrier or the latter be removed from themachine parallel seams, which may be either straight, sinuous, orscalloped, as may be desired, (see Fig. 11,) may be produced. All ofthese diiferent figures may be still further varied by varying thelength of the machine-feed or by providing interchangeable cam-wheels34, having cam-grooves of different forms from those herein shown, andthus the embroidering-figures which may be produced by the improvedmachine may be increased almost indefinitely.

Having thus described my invention, I claim and desire to secure byLetters Patcnt 1. In a fancy stitching or embroidering machine, thecombination with a stitch-forming mechanism comprising a needle-bar andtwo needles, of a horizontally or laterally movable frame or gate inwhich said needle-bar reciprocates vertically, anintermittingly-rotating cam connected with said needle-bar frame or gateand serving to impart several successive steps or movements in oppositedirections, and

across the line of the feed of the work, to said frame or gate and tothe said needle-bar and needles, means for operating said cam, athread-carrier, and means for moving said thread-carrier to and fro infront of said needles so as to interweave an embroideringthread with thesewing-threads of said needles.

2. In a fancy stitching or embroidering machine, the combination with astitch-forming mechanism comprising a needle-bar and two needles, of ahorizontally or laterally movable frame or gate in which said needle-barreciprocates vertically, an intermittingly-rotating cam connected withsaid needle-bar frame or gate and serving to impart several successivesteps or movements in opposite directions, and across the line of thefeed of the work, to said frame or gate and to the said needle-bar andneedles, adjustable means for operating said cam, so as to vary thespeed of rotation, a thread-carrier, and means for moving saidthread-carrier to and fro in front of said needles so as to interweavean embroideringthread with the sewing-threads of said needles.

3. In a fancy stitching or embroidering machine, the combination with astitch-forming mechanism comprising two needles and a needle-bar, of ahorizontally -movable frame or part in which said needle-barreciprocates vertically, an intermittinglyrotating cam connected withsaid frame or part and serving to impart a series of successivestep-by-step movements alternately in opposite directions to saidneedle-bar frame or part, an embroidering-thread carrier movable to andfro in front of said needles across the line of the seam, acontinuously-rotating cam-wheel, and connections between said cam-wheeland said intermittingly-rotating cam and saidthreadcarrier whereby thetwo lastnamed devices are operated.

4. In a fancy stitching or embroidering machine, the combination with astitch-forming mechanism comprising two needles and a needle-bar, of ahorizontally-movable frame or part in which said needle-bar reoiprocatesvertically, an intermittinglyrotating cam connected withsaid frame orpart and serving to impart a series of successive step-bystep movementsalternately in opposite directions to said needle-bar frame or part, anembroidering -thread carrier movable to and fro in front of said needlesacross the line of the seam, a continuously-rotating cam-wheel, andconnections between said cam-wheel and said intermittingly-rotating camand said threadcarrier whereby the two last-named devices are operated,the connections of the said continuously-rotating cam-wheel with saidintermittingly rotating cam being adjustable to permit the speed ofrotation of said intermittingly-rotating cam to be varied to vary theembroidery figures.

In testimony whereof I affix my signature in presence of two witnesses.

FRIEDERIGK MUELLER.

WVitnesses:

HENRY J. MILLER, H. A. KORNEMANN.

